An explosion rocked the Koda Energy plant in Shakopee Thursday afternoon, forcing the seven employees on site to evacute, the Star Tribune reports.

Emergency personnel were called to the scene shortly after 1 p.m. in response to the explosion, which occurred inside a tank at the biomass fuel plant that supplies power for neighboring Rahr Malting, KARE 11 reports.Fire crews stayed on site for at least two hours after the original call with their hoses aimed at the area of the original explosion as a safety precautions.

The explosion could be felt in homes and offices blocks away, but resulted in no injuries. Authorities told people within a 1-mile radius to stay inside until further notice, but that there was "no immediate danger."

A Shakopee resident tweeted out the news of the explosion shortly after it occurred, saying "our office building shook on Shumway St. and we saw smoke and then squad cars raced by." Bob Nagel, owner of nearby Bob's Lawn and Landscaping, said in the 19 years he's worked in the area he only remembered one small explosion.